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Finding the Fourth Proportional to 25,471.85, 35,151.27 and 15,917.28

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Solution

The fourth proportional to 25,471.85, 35,151.27 and 15,917.28 is: 21,965.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,471.85 : 35,151.27 = 15,917.28 : x
  2. Step 2: Convert to fraction form
    25,471.85/35,151.27 = 15,917.28/x
  3. Step 3: Cross multiply
    25,471.85x = 35,151.27 × 15,917.28
  4. Step 4: Simplify right side
    25,471.85x = 559,512,527.36
  5. Step 5: Solve for x
    x = 559,512,527.36/25,471.85
  6. Step 6: Final answer
    x = 21,965.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.